Improvement in gearing for seed-planters



NITED STATES PATENT OFFICE.

JACOB PEIRSON, OF WILMINGTON, DELAWARE.

IMPROVEMENT IN GEARING FOR SEED-PLANTERS.

Specification forming part of Letters Patent No. 7,268, dated April 9, 1850.

To all whom it may concern.-

Be it known that I, JACOB PEIRSON, of the city of Wilmington, in the county of New Oastle and State of Delaware, have invented a new and useful Improvement in my Patented Seed-Drills, which is described as follows, reference being had to the annexed drawings of the same, making part of this specification.

Figure 1 is a top view of a machine containing only one drill-tooth, it being evident that any required number of teeth may be used. In this view the cogged gearing is concealed by the case. Fig. 2 is a vertical longitudinal section of the same on the line w x of Fig. 1, the intermediate cog-wheel being in gear and the drill-tooth raised and suspended above the surface of the ground by the hook-rod. Fig.3 is a side elevation, showing the drill-tooth raised and the intermediate cog-wheel out of gear with the cog-wheelon the hub of thelarge supporting and propelling wheel,the front plate of the case being removed in order to show the cog-wheels. The tongue to which the horses are attached is not shown. Fig. 4 is an elevation of the latch-plate, carrier, and connecting-plate detached from the case and drawn on an enlarged scale, the lever-latch M being depressed and the intermediate cog-wheel, B, being represented by dotted lines as in gear with the cogwheel T on the propelling-wheel F.

Similar letters in the several figures refer to corresponding parts.

I construct the drill substantially as described in my patent of 1849, except the case K, lever-latch M, connectingplate-O, and carrier P, which I make as follows: The case K is made of cast metal about three-sixteenths of an inch thick, more or less. In the edge of the case, next the handles, are made two openings, z t, to admit the latch and connectingplate. On one end of the rock-shaft and lifting-bar L, I place a holding-lever, N. The slotted latch-plate M and connecting-plate O are made of stron g metal or other suitable material. The carrier P is made of cast metal or other suitable material, cored out to receive the end of the roller-shaft B. One end of the latch-plate M works on a round stud, s, inserted into the case K. An angular-shaped slot, m n 0, is made through the said latchplate. The segmental part of the slot at n is struck 0r scribed from the center of the stud s. The part of the slot marked m is scribed from the center of the lifting-bar L when the latch-plate is raised to nearly a horizontal position. Said slot admits the bolt or stud 3 in the lever N to pass freely through the same. One end of the connecting-plate O is attached to latch-plate at 4. by a bolt and stud, and the other end, after passing through the sloti in the case K, is attached to carrier Pby a bolt or stud, 5, passing through the carrier. The carrier P swings or works freely on the end of the seed-roller shaft B in the space between the spur-wheel S and the inner side of the case K. The intermediate wheel, R, runs loosely on the stud 6. By raising the handle or rear end, M, of the latch-plate M the intermediate wheel, R, is thrown out of gear with the cogwheel T on the propelling-wheel and the seedroller stopped, and by drawing back the upper end of the handle N of the lifting-bar L in the arc of a circle the seed-tubes are raised out of the ground, and an opposite effect is produced by a contrary action. The motion of the carrier P and lifting-bar L being alternate, the seeding-cylinder and drill-teeth are thrown in and out of gear alternately and not simultaneously, as in Pennocks machine and in'others.

E is the frame for containing and supporting the several parts, made in the usual manner.

F are the sustaining and propelling wheels, turning on my patented axles.

Gr is the hopper.

H is the seeding-cylinder.

I is the slide-valve in the lower part of the hopper.

J is the flexible conducting-tube; U, tubular drill-tooth.

V is the beam to which the tubular drilltooth is attached, said beam having its forward end attached to the frame and its rear end to the lifting-arm by a chain, W.

X is the lifting-arm, projecting at right angleshfrom the lifting-bar L, for lifting the drilltoot The last-named parts are made and arranged of the hopper, the hook portion of said rod resting upon said shelf Z when the drill-tooth is raised.

The before-described arrangement of cogged gearing may be used with or without the case K. I wish it to be distinctly understood that I do not claim the alternate motion by which the seed-tubes and seed-rollers are thrown in and out of operation; but

. What I claim as my invention, and desire to secure by Letters Patent, is

The employment of thelatch-plateM,in com- 

